JPS622415B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an operating device for an opening/closing section that combines an opening/closing section and a disconnecting section.

(Prior art) An operating device for a switching section that combines a switching section and a disconnecting section has a disconnecting section that does not have the ability to switch the load current. Close the circuit. In addition, when opening a circuit, it is necessary to open the open section first and then the disconnect section, and the operation sequence must be such that the load current is never switched on or off at the disconnect section.
The operation of the opening/closing section and the disconnecting section requires a time difference.

A conventional opening/closing unit operating device closes a disconnecting unit, locks the disconnecting unit in a closed position using a latching mechanism, and then closes the opening/closing unit. Also, after opening the open circuit, the latch was removed and the disconnecting section was opened by a spring.

(Problem to be Solved by the Invention) However, the latch mechanism that locks the disconnecting section in the closed position has the risk of disengaging due to mechanical vibration during operation and causing the disconnecting section to open inadvertently. Since the circuit is opened by a spring, operation reliability is low. Another problem was that it was not possible to perform electrical tests such as commercial frequency withstand voltage tests and shock wave withstand voltage tests between in-phase terminals with the disconnecting section in the closed state and the switching section in the open state.

The present invention solves the above problem by locking the disconnecting section in the closed state and then closing the opening/closing section, and controlling the operation of the disconnecting section so as to prevent the disconnector from opening accidentally during operation. It is an object of the present invention to provide a highly reliable operating device for a switch that can be operated reliably with an operating handle.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a first lever that opens and closes the disconnection section, and a second lever that opens and closes the opening and closing section.
It consists of a lever and a cam plate that is rotated by the operating handle, and the guide groove of the cam plate is shaped to guide the roller of the first lever, close the disconnector, and then lock it, and is attached to the cam plate. The opening/closing section is opened and closed by using a roller that springs the second lever to provide a time difference.

(Function) According to the present invention, by rotating the cam plate with the operating handle, the circuit closing operation is performed by closing the disconnection section with the first lever and then locking it, and then locking the disconnection section with a time difference. Since the first lever closes the opening/closing section, the first lever is held by the guide groove of the cam plate, so it will not be erroneously moved due to mechanical vibration or the like. In the circuit-opening operation, the second lever opens the opening/closing section, and the first lever opens the disconnecting section with a time difference.

(Example) An example of the present invention shown in the drawings will be described below. In FIGS. 1 and 2, 1 is an opening/closing part such as a vacuum valve, and 2 is the opening/closing part 1 and a movable contact 3.
3 is a movable contact at the disconnection section, 4 is a fixed contact that connects and separates from the movable contact 3, 5 is a flexible conductor that connects the flexible conductor;
6 is an insulating shaft that rotates to operate the movable contact 3, and 6 is an insulating shaft that rotates to move the movable contact of the opening/closing section 1 to open/close the opening/closing operation. To explain the operating mechanism, 7 is an operating shaft rotatably supported by a frame 8, 9 is an operating handle that can be attached to and detached from the operating shaft 7, and 10 is a cam plate that is integrally fixed to the operating shaft 7 and drives the disconnection section. A linear guide groove 10a for operating the roller 20 of the mechanism and an arcuate guide groove 10b centered on the operating shaft 7 are provided. A roller 11 is rotatably mounted on the cam plate 10, and is engaged with a second lever 12 provided with a U-shaped notch 12a to form a toggle mechanism.

The mechanism for driving the disconnection section is as follows. 19
is a first lever; 20 is a roller rotatably attached to one end of the first lever 19;
A and 10b guide the first lever 19, and 21 is a shaft that rotatably supports the other end of the first lever 19 on the frame 8. 22
23 is a lever that rotates the insulating shaft 5;
This is a link that connects the lever 19 and the lever 22.

The toggle mechanism that drives the opening/closing section 1 is as follows. 17 is a shaft rotatably supported by the frame 8; 13 is a lever fixed to the shaft 17;
14 is a lever rotatable about the shaft 17; 15 is a toggle spring inserted between the end of the lever 13 and the end of the lever 14; the cam plate 10 is fixed at the end of the shaft 17; A second lever 12 having a U-shaped notch 12a that engages with the roller 11 when rotated through an angle of is fixed. 18 is a lever that rotates the insulating shaft 6, 16 is a lever 1
4 and the end of the lever 18.

Next, the effect will be explained. FIG. 1 shows the opening/closing section in an open state, and when the circuit is closed, when the operating shaft 7 integrated with the operating handle 8 is rotated clockwise, the cam plate 10 is also rotated in the same direction. Then, the linear guide groove 10a provided in the cam plate 10 pushes the roller 20 at the tip of the first lever 19, and the shaft 21 rotates clockwise. This rotation pushes the link 23 to the left, rotates the lever 22 clockwise, rotates the insulating shaft 5 clockwise, closes the movable contact 3 to the fixed contact 4, and the disconnection section is in a closed state. becomes. The arc-shaped guide groove 10b of the cam plate 10 does not push the roller 20 even if the cam plate 10 is further rotated clockwise, and the disconnecting portion is locked in the closed state. FIG. 3 shows a state in which only this disconnecting section is closed, and the opening/closing section 1 is in an open state.

When the operating shaft 7 is further rotated clockwise, the roller 11 of the cam plate 10 engages with the U-shaped notch 12a of the second lever 12 integrated with the shaft 17, causing the shaft 17 to rotate counterclockwise.
And the lever 13 integrated with the shaft 17
simultaneously rotates counterclockwise, and the toggle spring 15 is energized. When the operation shaft 7 is further rotated clockwise, the toggle between the lever 13 and the toggle spring 15 is reversed past the dead center, and the releasing force of the toggle spring 15 causes the lever 14 to rotate clockwise about the shaft 17. This rotational force is transmitted to the lever 18 via the link 16, rotates the insulating shaft 6 clockwise, and closes the opening/closing part 1.
The opening/closing section is in a closed state as shown in FIG.

The operation from the closed state shown in FIG. 4 to the open state shown in FIG. 10, the shaft 17 rotates clockwise, and the reversal of the toggle mechanism brings the opening/closing section 1 into the open state, resulting in the state shown in FIG. When the operating shaft 7 is further rotated counterclockwise, the roller 11 of the cam plate 10 is separated from the U-shaped notch 12a of the second lever 12. Next, the roller 20 is pushed by the guide groove 10a of the cam plate 10, the first lever 19 is rotated counterclockwise, the movable contact 3 of the disconnector is separated from the fixed contact 4, and the first lever 19 is rotated counterclockwise. As shown in the figure, the switch 1 is in an open state.

〔Effect of the invention〕

As described above, according to the present invention, the cam plate rotated by the operation handle is provided with a guide groove and a roller, which are composed of a linear groove and an arcuate groove, and the guide groove is provided with a roller.
After activating the lever to close the disconnector, the roller operates the second lever with a time difference, and the toggle mechanism closes the opening/closing part, ensuring the operational relationship between the opening/closing part and the disconnector. It can be operated with a time difference. Since the first lever is held in the closed state of the disconnecting section by the guide groove of the cam plate, there is no chance of the circuit opening due to malfunction due to mechanical vibrations, etc., and this is ensured. The opening operation of the disconnecting section is reliably driven by the guide groove of the cam plate, so there is no need for a spring for opening the disconnecting section, and the operation is performed directly by the operating handle, which has excellent effects such as improved reliability.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the operating device for the opening/closing part of the present invention, Fig. 2 is a plan view, and Fig. 3 is a front view showing an operating state in which the disconnecting part is closed and the opening/closing part is open. , FIG. 4 is a front view showing an operating state in which both the disconnecting section and the opening/closing section are closed. 1... Opening/closing part, 2... Flexible conductor, 3... Movable contact, 4... Fixed contact, 5... Insulating shaft, 6... Insulating shaft, 7... Operating shaft,
8...Frame, 9...Operation handle, 10...
Cam plate, 10a, 10b...Guide groove, 11...Roller, 12...Second lever, 12a...U-shaped notch, 13...Lever, 14...Lever, 15...
...Toggle spring, 16...Link, 18...Lever, 19...First lever, 20...Roller, 2
2...Lever, 23...Link.

Claims (1)

[Claims] 1 a first lever that opens and closes a disconnector;
a cam plate that guides a roller attached to the lever with a guide groove; a second lever that is elastically operated by the roller attached to the cam plate to open and close the opening/closing part; and an operation handle that rotates the cam plate. The cam plate has a guide groove consisting of a linear groove that moves the first lever and an arcuate groove that does not move the first lever, and has a shape that closes and then locks the disconnector, and provides a time difference. An operating device for a switch, characterized in that a roller is arranged so as to open and close an opening/closing part.